Tank for treating glutinous material.



A. 0. RICE. I TANK FOR TREATING GLUTINOUS MATERIAL.

APPLICATION FILED MAR.6, 19b7- Patented Nov. 10, 1908.

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TANK FOR TREATING GLUTINOUS MATERIAL.

APPLIUATION FILED MAR. 6, 1907.

Patented NO 10,1908.

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' APPLICATION FI ED MAR. e, 1901.

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UNITED STATES PATENT OFFICE.

ALVA 0. RICE, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO VELLUMOID PAPERCOM- PANY, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF WEST VIRGINIA.

TANK FOR TREATING GLUTINOU'S MATERIAL.

Specification of Letters Patent.

Patented Nov. 10, 1908.

Application filed March 6, 1907. Serial No. 360,831.

To all whom it may concern:

Be it known that I, ALVA C. RICE, a citizen of the United States ofAmerica, residing at IVorcester, in the county of Worcester and State ofMassachusetts, have invented a new and useful Tank for TreatingGlutinous Material, of which the following is a specification.

-My invention relates to improvements in tanks employed in thepreparation of glutinous material, as ordinary glue, for certainpurpose, in which a peculiarly constructed tank is provided, togetherwith power-driven agitators of special construction, and auxiliary andsubsidiary parts and members, all as hereinafter set forth.

The object of my invention is to provide a tank suitable for cooking andotherwise preparing to the best advantage the glue used in treatingpaper to strengthen the same and to render it water-proof, grease-proofand acidproof, or for other uses to which such tank This tank isparticularly useful in the manufacture of what is known as Vellumoidpaper or paper covered by States Letters Patent N 0. 804,808, issued tothe Vellumoid Paper Company November 14th, 1905.

Other objects and advantages of my improvement will appear in the courseof the following description.

I attain these objects by the means illustrateld in the accompanyingdrawings, in whic 'i Figure l is a view of two tanks and their a'ipurtenances embodying my invention, the first of these tanks beingshown in section and the second in-elevation; Fig. 2, a plan view of theouter jacket of one of the tanks; Fig. 3. an enlarged sectional view ofa portion of the bottom of one of the tanks, showin g the constructionof the same and the outlet from the interior with the valve therefor,said view being taken on lines 3-3 looking in the direction of the arrowin Fig. 2; Fig. 4, an enlarged detail of the agitator, the shaft beingin section and the major portions of the arms being broken off, and, Fi5, an en larged detail of the agitator sha bearing.

Similar figures refer to similar parts throughout the several views.

Although each tank is complete initself and each 13 the duplicate of theother, I have shown two because in practice I prefer to employ two andeven three or more, according 1 through a stand pipe 8.

to the size of the plant or the size and number of the treating tanksfor the paper which receive their supply from this source.

The driving mechanism for the agitators is adaptable to any number oftanks after the first by merely lengthening the shaft and duplicatingthe supports therefor and the gears thereon, as will be readily seen.

Each'tank consists of an outer jacket 1 and an inner acket 2 suitablyconstructed and so arranged one within the other as to provide a chamber4 at the sides and bottom, such chamber being closed at the top. On thebottom or floor of the acket l are two series of inverted T-irons 5 witha series of perforated steam pipes 6 between. The aforesaid T-irons andpipes lie horizontally between of the jacket 2 rests on the upperT-irons.

At one end the steam .pipes 6 open into a perforated steam pipe 7 whichextends part way around the chamber 4 and receives steam from a suitableThe stand pipe 8 opensat the bottom into the pipe 7 and rises above thetop of the chamber 4 where it is provided with a valve 9 to control theentrance of the steam. The ends of the pipe 7 and the'ends of the pipes6 opposite the junction points with said pipe 7 are closed with capslO.The pipes 6 extend, crosswise of the T-irons. Water is admitted to thechamber 4, from any suitable source of pipell located at the top andprovided with a valve 12; and water, different times during thepreparation of the solution, is admitted to the interior of the tank,that is, to the jacket 2, from any suitable sources of supply, through apipe 13 also located at the top and provided with a valve 14.

15 is a gage-glass to show the height of water in the jacket 4;.

In the floor of the jacket 1 is a cleanout opening 16 through which thewaste Water in the chamber 4 can be removed, a pipe 17 and valve1S-being provided below said floor for this purpose.

The outlet from the tank for the solution is through a valve-seat 19,riveted to the underside of the floor of the jacket 2, and a pipe 20passing from said valve-seat downward through the floor of the jacket 1.The

lower end of the pipe 20 is usually connect-I source of supply both hotand cold at.

. the floors of the two jackets, and the bottom supply, through a ed bya pipe with a pump (not shown) through themedium of whlch the solutionis transferred from the preparing tank to the treating tank forthe-paper.

A valve 21 is provided for the valve-seat .19, which has a stem 22extending upward through and abovq-a bracket 23 at the top of the tank.The' upper terminal of the valve-stem 22 is in thread engagement withthe bracket 23, and such stem has a hand-wheel 24 mounted thereon tofacilitate rotating the parts so as to open or close the valve 21according to the direction of such rotation and whethersaid stem bescrewed co mclinations of the 'tute a of onelside of the second orright-hand tank in Fig. 1 is broken out to show the connection betweenthe valvestem and its bracket. Rising from the center of the floor ofthe jacket 2 of the tank i'sa pin or stud 26 which enters an opening inthe base of a vertical agitator shaft 27 and prevents. such base fromswaying. The upper terminal of the shaft 27 is ournaled in the mannerexplained below in a bearing 28 bolted to the top of a support orplatform 29, after passing through the same. The platform 29 supports te agitator mechanism on top of the tanks. The shaft 27 below theplatform29 is square in cross-section and to the portion of the shaft is secureda number of hor1- zontal agitator paddles or arms 30, there being foursuch arms in the present case arranged in pairs standing at right-anglesto each other.

Each arm 30 has at its inner end a collar section 31 adapted to fit ontotwo adjacent sides of the angular part of the shaft.27, so

that when two armshave their collar sec tions brought into properposition they can be bolted together, as shown, to form a completecollar about said shaft. The collars formed in the manner noted abovefirmly grip the shaft and hold the arms securely in place, owingito thefact that the adjacent edges of eac pair of collar sections do not comequite together thus enabling siich sec-' tions to be drawn into clqseand bind ng contact with the shaft by bolts 32 and nuts 33. Each arm 30is oblique'cross-wise. The

two arms which constiopposite directions; In

air are in Fig. 1 t in the first or left-hand tank is broken away todisclose the stud 26.

stem is screwed also the shaft 35 and the chamber 4, such pipe e lowerpart of the shaft 27 shown solution is raised to The bearing 28 has aninner hub-50 for the larger cylindrical part of the vertical shaft 27 atthe upper terminal, and surrounding this hub is an annular oil chamber51. The smaller top portion of the shaft 27 is received into a gear 36andthe two'members are rigidly fastened together by means of a bolt 52tapped into such members along a line of junction parallel with theiraxis. The gear 36 has a depending sleeve'53 which. 1s adapted to enterthe chamber 51 and fit around the hub 50. -R'adial holes 54 intliesleeve 53 admit oil from the chamber 51 to l the bearing surfacesbetween said sleeve and hub' 50. This construction enables the shaft 27to be rotatably suspended at the top and to revolve with very littlefriction, since the base of the sleeve 53 in the oil chamber '51 is themovable part that sustains the downward stress, there being no contactbetween 35 the upper end of the bearing 28 or its hub 50 and the gear36, and guards against the possibility of any oil getting into the tankbetow: 1 The shaft is really supported by the gear'and both aresupported by'the floor of the oil chamber.

The agitator made up of theshaft 27 and the arms 30 is revolved directlythrough the medium of a bevel pinion 34 carriedby a horizontal shaft 35and meshin with the bevel gear 36' on the upper end of said shaft 27. Inline withthe shaft 35 is'a shaft 37 driven by 'a bevel pinion 38'carried by a A shaft 39 and meshing with a bevel gear 40 on said shaft37, and. the shaft 35 is engaged with and disengaged from the shaft 37by means of a clutch 41. A pulley'42 on the shaft 39' when revolved inthe usual manner drives said shaft and the shaft 37 agitators when theclutch 41 is'actuated to engage the two lastmentioned shafts. The shafts37 and 39 are situated at right-angles to each other and these with theshaft 35 are suitably journaled in bearings at the upper ends ofstandards 43 bolted to the top of the platform 29. As before intimatedthe driving mechanism may beduplicated for each additional agitator. 4

A short inclosing pipe 44 may be provided for the pipe 20 where it runsthrough the 44 extendin -between the base of the valve-seat 19 am aflange 45 riveted to-the underside of the floor of the jacket 1, asshownin Fig. 3. A packing ring j 46 is inserted between the flange 45and the adjacent end of the pipe 44. The lower terminal of the pipe 44is screwthreaded and a lock-nut 47 is screwed onto such terminal andforced against the bottom of the flange 45. I

In practice a solution of glue and water is made in the tank, the waterbeing run in through the'pipe 13 and valve 14, and such the propertemperature 5 by live steam injected into the "same throughthe pipe 8,valve 9 and perforated pipes 6 and 7. The solution is not maintained ata high temperature throu hout the entire period of the treatment, int isallowed to 10 cool several times and at such times the steam must beshut off from In the processof preparing the solution it is agitated tothoroughly mix and commingle the ingredients thereof by means of thearms 30which are revolved in the manner hereinbefore fully described.)After being fully prepared the valve 21 may be opened and C thesolution pumped out of the tank through the pipe in whatever quantitiesare re- 20 quired; meanwhile the preparation ofa similar solution can begoing on in the other tank. The water in the chamber 4 can be drawn offthrough the pipe 17 and valve 18 at the bottom. The interior walls andfloor of the jacket 2 and the walls and floor of the chamber 4 can beflushed and cleansed whenever desired by turning hot water into saidjacket and either steam or water and steam into said chamber andpermitting the same to escape through the valve seat19 and pipe 20 fromthe jacket and through the pipe 17 and valve 18 from'the chamber. Itwill be clearly understood from the foregoing description that with thistank I am enabled to thoroughly treat and prepare glutinous material, sofar. as thejheating or cooking of the same goes, by means of the waterjacket surrounding the solution re- 'ceptacle without subjecting suchmaterial or solution to the direct action of or actual contact witheither steam or hot water, whichis a very important advantage and one ofthe primary objects of my invention because in no other way have I beenable to produce as good results or properly prepare the glue even. f

What I claim as my invention, and desire to secure by Letters Patent, is

l. The combination of a treating tank, for glutinous material,comprising double walls and floors forming a closed chamber around andbelow the receptacle for the material to be treated, means in the bottomof such chamhcr-to-heat the same, means also in the bottom of suchchamber to support the rethe chamber 4;."-

ries o ceptacle on the fioor of the chamber," and agitators in saidreceptacle adapted to keep the solution therein in motion.

2. The combination with a treating tank, for glutinous material,comprising double walls and floors forming a chamber around "and belowthe receptacle for thematerial to be treated, of perforated steam pipesin the bottom of said chamber, and supporting members above and belowsuch pipes.

3. The combination with for glutinous material, .comprislng two jacketsspaced apart and forming a solution receptacle with a chamber around andbelow the same for water, of perforated steam pipes in the bottom ofsaid chamber, and supporting membersalso in the bottom of the chamber,-

a treating tank,

said members and certain of i said steam pipes affording a support forthe inner jacket on the floor of the outer jacket.

4. A treating tank, for glutinous material, comprising two jacketsspaced apart to form an outer closed chamber and an inner receptacle,said chamber having a water inlet and 'outlet and said receptaclehavinga solution outlet with a .valve therefor, a stem rising from saidvalve, a support for the upper terminal of said stem, the latter beinginthreaded engagement with said support, and steam pipes in the outerchamber having a connection leading to the outside of the tank.

5. The combination with a treating tank,

for glutinous material, comprising two jackets spaced apart to forman'outer closed chamber around and below an inner receptacle, of aseries of steam pipes and a feed pipe therefor in the bottom'ofsaidouter chamber, said pipes "being-perforated and havin their free endscapped, and two sesupports arranged above and below said steampi'pes andcrosswise of the same.

- 6. The combination with a treating tank for glutinous material, and asupport on top of said tank, of a vertical agitator shaft centered insuch tank and suspended from said support. and provided withlaterally-extending arms, means to revolve such shaft and means toprevent the lubricant from the upper shaft bearing from passing belowthe support into said tank.

, ALVA G. RICE.

Witnesses:

E. A. D. Moss, J. H. PECKHAM.

